orchestrator

type BinlogCoordinates struct {
	LogFile string
	LogPos  int64
	Type    BinlogType
}

type BinlogType int

type CandidatePromotionRule string

type Error struct {
	HTTPStatus int
	Path       string
	Message    string
	Details    interface{}
}

type Instance struct {
	Key                    InstanceKey
	InstanceAlias          string
	Uptime                 uint
	ServerID               uint
	ServerUUID             string
	Version                string
	VersionComment         string
	FlavorName             string
	ReadOnly               bool
	Binlog_format          string
	BinlogRowImage         string
	LogBinEnabled          bool
	LogSlaveUpdatesEnabled bool
	SelfBinlogCoordinates  BinlogCoordinates
	MasterKey              InstanceKey
	IsDetachedMaster       bool
	Slave_SQL_Running      bool
	Slave_IO_Running       bool
	HasReplicationFilters  bool
	GTIDMode               string
	SupportsOracleGTID     bool
	UsingOracleGTID        bool
	UsingMariaDBGTID       bool
	UsingPseudoGTID        bool
	ReadBinlogCoordinates  BinlogCoordinates
	ExecBinlogCoordinates  BinlogCoordinates
	IsDetached             bool
	RelaylogCoordinates    BinlogCoordinates
	LastSQLError           string
	LastIOError            string
	SecondsBehindMaster    sql.NullInt64
	SQLDelay               uint
	ExecutedGtidSet        string
	GtidPurged             string

	SlaveLagSeconds sql.NullInt64
	//SlaveHosts                      InstanceKeyMap
	ClusterName                     string
	SuggestedClusterAlias           string
	DataCenter                      string
	PhysicalEnvironment             string
	ReplicationDepth                uint
	IsCoMaster                      bool
	HasReplicationCredentials       bool
	ReplicationCredentialsAvailable bool
	SemiSyncEnforced                bool
	SemiSyncMasterEnabled           bool
	SemiSyncReplicaEnabled          bool

	LastSeenTimestamp    string
	IsLastCheckValid     bool
	IsUpToDate           bool
	IsRecentlyChecked    bool
	SecondsSinceLastSeen sql.NullInt64
	CountMySQLSnapshots  int

	// Careful. IsCandidate and PromotionRule are used together
	// and probably need to be merged. IsCandidate's value may
	// be picked up from daabase_candidate_instance's value when
	// reading an instance from the db.
	IsCandidate          bool
	PromotionRule        CandidatePromotionRule
	IsDowntimed          bool
	DowntimeReason       string
	DowntimeOwner        string
	DowntimeEndTimestamp string
	ElapsedDowntime      time.Duration
	UnresolvedHostname   string
	AllowTLS             bool

	LastDiscoveryLatency time.Duration
}

type InstanceKey struct {
	Hostname string
	Port     int
}

type InstanceKeyMap map[InstanceKey]bool

type Interface interface {
	Discover(host string, port int) error
	Forget(host string, port int) error

	Master(clusterHint string) (*Instance, error)

	Cluster(cluster string) ([]Instance, error)

	AuditRecovery(cluster string) ([]TopologyRecovery, error)
	AckRecovery(id int64, commnet string) error

	SetHostWritable(key InstanceKey) error
	SetHostReadOnly(key InstanceKey) error

	BeginMaintenance(key InstanceKey, owner, reason string) error
	EndMaintenance(key InstanceKey) error
	Maintenance() ([]Maintenance, error)
}

type Maintenance struct {
	MaintenanceId  uint
	Key            InstanceKey
	BeginTimestamp string
	SecondsElapsed uint
	IsActive       bool
	Owner          string
	Reason         string
}

type TopologyRecovery struct {
	Id                     int64
	UID                    string
	SuccessorKey           *InstanceKey
	SuccessorAlias         string
	IsActive               bool
	IsSuccessful           bool
	AllErrors              []string
	RecoveryStartTimestamp string
	RecoveryEndTimestamp   string
	ProcessingNodeHostname string
	ProcessingNodeToken    string
	Acknowledged           bool
	AcknowledgedAt         string
	AcknowledgedBy         string
	AcknowledgedComment    string
	LastDetectionId        int64
	RelatedRecoveryId      int64
}